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Asked: 2026-05-23T00:55:08+00:00

I am somewhat confused, need some C/C++ guru here. If it is C and

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I am somewhat confused, need some C/C++ guru here. If it is C and in principle the language cannot change then how come some programs run on Visual C++ and not on gcc ???

I am using Visual C++ 2008 and gcc 4.4.1 and trying to compile some really old code (1996). It somewhat works with Visual C++ (Windows XP) and completely fails with gcc (Ubuntu 9.10).

What alarms me is that if it is C/C++, then the compiler should not be an issue. Any help ?

UPDATE : This is the code, http://www.ece.unh.edu/robots/cmacdemo.c

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1 Answer

  1. Editorial Team

    I got it to compile and link, under gcc on linux:

    • as already pointed out, change the “\” to “/” in the #include file names
    • change #include "io.h" to #include "sys/io.h"
    • comment out #include "conio.h", it is not on linux and doesn’t seem to have been needed
    • comment out the Windows-only flag O_BINARY in file unh_cmac.c
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